A patient receiving cisplatin, vinblastine, and bleomycin for a testicular neoplasm develops renal impairment. This is the effect of which drug(s)
**Core Concept**
Cisplatin, a platinum-based chemotherapeutic agent, is known to cause renal impairment through various mechanisms, including direct tubular toxicity and vasoconstriction of the renal vasculature. This toxicity can lead to acute kidney injury (AKI) in patients receiving high doses of cisplatin.
**Why the Correct Answer is Right**
Cisplatin-induced nephrotoxicity is thought to occur through several pathways, including the generation of reactive oxygen species (ROS) and the inhibition of DNA repair mechanisms. The platinum ions in cisplatin bind to DNA, causing damage to the renal tubular cells and leading to cell death. This damage can be exacerbated by the concomitant use of other nephrotoxic agents.
**Why Each Wrong Option is Incorrect**
* **Option A:** Vinblastine is a vinca alkaloid that primarily causes neurotoxicity and myelosuppression, rather than nephrotoxicity.
* **Option B:** Bleomycin is a glycopeptide antibiotic that causes pulmonary toxicity, particularly pneumonitis and pulmonary fibrosis, rather than nephrotoxicity.
* **Option C:** While all three agents can cause some degree of renal impairment, the primary cause of renal impairment in this scenario is likely due to cisplatin.
**Clinical Pearl / High-Yield Fact**
Cisplatin-induced nephrotoxicity can be mitigated by the co-administration of diuretics, such as mannitol, and by ensuring adequate hydration in patients receiving high doses of cisplatin.
**Correct Answer: C.**